Fixed various typos.

Applied patch by snowleopard2 fixing a bunch of typos such as misspellings and double words in the documentation. Combined the patch with some local queued typos waiting to be committed as well as adding new typo fixes inspired by the patch.

Function names with American spelling were not changed nor was third-party code touched. The only code changes involve some changes in strings that are translated ("Can not" -> "Cannot").

Closes #13063 (again).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67280 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/window.h

@@ -408,7 +408,7 @@ public:
     void Centre(int dir = wxBOTH) { DoCentre(dir); }
     void Center(int dir = wxBOTH) { DoCentre(dir); }
 
-        // centre with respect to the the parent window
+        // centre with respect to the parent window
     void CentreOnParent(int dir = wxBOTH) { DoCentre(dir); }
     void CenterOnParent(int dir = wxBOTH) { CentreOnParent(dir); }
 
@@ -446,7 +446,7 @@ public:
 
 
         // Call these to override what GetBestSize() returns. This
-        // method is only virtual because it is overriden in wxTLW
+        // method is only virtual because it is overridden in wxTLW
         // as a different API for SetSizeHints().
     virtual void SetMinSize(const wxSize& minSize);
     virtual void SetMaxSize(const wxSize& maxSize);
@@ -1658,7 +1658,7 @@ protected:
     // (GetBorderSize() will be used to add them)
     virtual wxSize DoGetBestClientSize() const { return wxDefaultSize; }
 
-    // this is the virtual function to be overriden in any derived class which
+    // this is the virtual function to be overridden in any derived class which
     // wants to change how SetSize() or Move() works - it is called by all
     // versions of these functions in the base class
     virtual void DoSetSize(int x, int y,